A 1st level Wizard gets acces to an Encounter power that is just as good as an 11th level Dragonborn's Dragon Breath with a feat invested.
At 13th level a Wizard gets access to an Encounter power which hits harder than level 21 Dragon Breath, and allows you to Push 4 anything hit.
At 27, a Wizard can obtain an Encounter power which by base hits harder than Epic feated Dragon Breath, does 2 damage type to help mitigate Resistance, and only hits enemies.
And perhaps the crowning glory of Wizardry AoE'edness, a level 23 Encounter power which strikes 1 creature for 4d6, 2 within 5 of that one for 2d6, and everything else within Close Burst 20 for 1d6.
Duration extension comes in two flavors. It's a once an encounter power, you can choose to either give a specific creature a penalty to Saves equal to your Wis modifier, or keep a Zone effect around an extra turn.
Near every single ability a Wizard has carries some sort of debuff with it.
I'm putting up large amounts of information on Wizard AoE's because I'm not quite sure what you're looking for. You've comparing one racial power to an entire class, when they don't even come close. If you're looking for debilitating effects, it seems most of them are along the lines of inflicting a specific condition until the end of the Wizard's next turn.